关键词: 纤维毡, 池沸腾, 强化换热, 孔隙率

Abstract:

The pool boiling heat transfer performance on horizontal surface sintered with copper fiber felt was investigated with deionized water as working fluid at atmospheric pressure.The copper fiber felt，which has four kinds of porosity（0.6，0.7，0.8 and 0.9）for a given fiber diameter（50 μm and 160 μm），is proposed to provide artificial nucleate sites to improve the heat transfer performance of pool boiling.High speed camera was employed to record the evolution of the pool boiling process on the heating surface.For fiber felt with a given fiber diameter，it is observed that the bubble departing diameter decreased as the increasing of porosity.However纤维毡, 池沸腾, 强化换热, 孔隙率